[Bug 879052] Adding new styles to profile detail page.

See [this attachment](https://bug876928.bugzilla.mozilla.org/attachment.cgi?id=755186) from [Bug 876928](https://bugzilla.mozilla.org/show_bug.cgi?id=876928) for the sketch that goes with the layout. 

Note that there are a few things in this layout that are not part of the sketch, but that need to be in the page to get tests to pass (e.g. "Your Profile", "Mozillian Profile" message at the top of the page).  I also made some fixes to tests in order for them to work with the new layout.